Dormant Neural Stem Cells (IMAGE) Duke-NUS Medical School Caption Drosophila neural stem cells (NSCs) in a dormant state are unable to divide and generate neurons. Deadpan (Dpn, in red) is an NSC marker. Cell outline of NSCs is marked by a green fluorescent protein (GFP). Credit Ye Sing Tan Usage Restrictions The image may only be used with the prescribed caption or similar and credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.